Amkor Technology vs ASE Technology
Both are primarily Outsourced Assembly & Test companies. ASE Technology is larger by market cap ($123.5B vs $13.9B). ASE Technology reports higher tracked revenue ($20.6B vs $6.7B).
Shared segment: OSAT.
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Side-by-side
| Amkor Technology | ASE Technology | |
|---|---|---|
| Market cap | $13.9B | $123.5B |
| Revenue | $6.7B (FY2025) | $20.6B (FY2025) |
| Primary segment | Outsourced Assembly & Test | Outsourced Assembly & Test |
| Market position | major | leader |
| Country | United States | Taiwan |
| Tracked suppliers | 16 | 20 |
| Tracked customers | 6 | 72 |
| Chokepoint / criticality | 68/100 | 81/100 |
Market caps/revenue from the wafergraph dataset · data as of 2026-10-04. Criticality is a graph-derived chokepoint score (0–100). Coverage is partial; "Unpriced" means no reliable market cap.
How Amkor Technology and ASE Technology compare
- Size: ASE Technology is the larger company by market cap.
- Revenue: ASE Technology reports higher tracked revenue.
- Supply-chain criticality: ASE Technology has the higher chokepoint score (81/100 vs 68/100).
- Footprint: Amkor Technology (United States) vs ASE Technology (Taiwan).
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Cite as: wafergraph, “Amkor Technology vs ASE Technology”, https://wafergraph.com/compare/amkor-vs-ase (data as of 2026-10-04).
Frequently asked questions3
- Is Amkor Technology bigger than ASE Technology?
- ASE Technology is larger by market cap ($123.5B vs $13.9B).
- What's the difference between Amkor Technology and ASE Technology?
- Amkor Technology is a major in Outsourced Assembly & Test based in United States; ASE Technology is a leader in Outsourced Assembly & Test based in Taiwan. Both operate in the OSAT segment.
- Who are Amkor Technology's and ASE Technology's suppliers?
- wafergraph tracks 16 suppliers for Amkor Technology and 20 for ASE Technology — Amkor Technology's include Teradyne, DISCO, BE Semiconductor Industries; ASE Technology's include Tokyo Electron, Advantest, Teradyne.